Gas holder



April21,1'931. P..M.KUEHN 1,802,261

GAS HOLDER Filed April 14, 1928 2 Sheets-Sheet l April 21, 1931. P.'M.KUEHN 1,802,261

GAS HOLDER Filed April 14, 1928 2 Sheets-Sheet 2 Paul E083.

Patented Apr. 21, 1931 currensrares T NT F c wnnn COMPANY, OFBALTIIVIORE, MARY LAND, A CORPORATION OF MARYLAND- Gas HOLDERapplication filed April 14,.

This invention pertains to gas holders and relates more particularly tomeans employed for securing anadmixture of the gas within the holder,this with a view of maintaining as near as possible a uniform or meanscondition of the gas which is withdrawn there- .1: iiom.

While the invention 1s applicable to the handling of blast furnace gas,particularly where such gas is to be employed for firing coke ovens, theinvention in its broader aspect is of general applicability.

Stated in a generic way the invention may be said to comprise means toinsure, by the utilization of the pressure of the incoming gas streamwhich is forced through a high speed nozzle, an admixing of the gascontent of the holder whereby stratification of the gas due to varyingspecific gravities and other conditions is prevented.

I am aware that broadly considered it is not new to inject a stream ofgas into the body of gas within a holder for the purpose of securing anadmixture within the gas body, but the present invention differstherefrom in that the entire body of incoming gas is forced through anozzle and is thereby caused to intermix with the entire body of gaswithin the holder, thereby insuring a mean condition of the gas which iswithdrawn from the holder.

Furthermore, by locating the high speed nozzle to one side of the centerof the holder, a highly effective mixing act-ion is obtained. Again, thehigh speed nozzle, as hereinafter set forth, is of the aspirator typeand the shell of the aspirator is provided with leader pipes that drawgas from remote points within the holder and mix it in the outlet of theaspirator itself with the inflow from the main. Any or all of thesefeatures are effective in carrying out the practical purposes of theinvention in its several aspects above mentioned or hereinafterdescribed or claimec.

The invention will be best understood upon reference to the annexeddrawings wherein:

Figure 1 is a vertical sectional elevation of a holder of the waterlesstype illustrating the inlet line or trunk for the gas, taken on the lineI-I of Figure 2,

1925. seriai re. 270,036.

Figure '2 a horizontal section ont-heline IIII of Figure 1, 1

Figure '8 a detail vertical sectional view of the injector nozzleemployed through which the gas is introduced into the holder,

. Figure 4 a like View taken on the line lV-lV-0f- Figure 3, and

Figure 5 a detail View illustrative "of a simple nozzle "connected tothe inlet trunk'or line, the nozzle being shown in vertical'scctionand'the pipe leading thereto in elevation. Y

Referring the shell-of therein a movable piston or diaphragm 2, whichlattercarries at its periphery suitable sealingmeans to prevent theescapeof gas. "Such construction is well known in the first to Figures 1to 4, 1 denotes art, hence no detailed description is herein given. j

' Thepiston, of course, moves up and down under varying gas pressure 7As above indicated, it is desirable to se cure within the holder athorough admixture ofthe entire body-of gas introduced into the holderand to this end I provide, as an extension, of the inlet main 3, a trunkor inlet pipe 4, which latter is flattened or non-circular in'crosssection in order to allow the piston to move downwardly withdrawn fromthe holder. The trunk or member 4 will preferably be given the samecross sectional area as the main 3 so that the full volume "of gaswhichis forced in through the mainwill pass through the trunk i to anozzle 5 connectedto the outer end thereof and pointing in an upwarddirection. This nozzle is preferably of the injector type; that is tosay it is surrounded by a shell or casing '6 which terminates above theupper end of the'nozzle 5 and is provided with a series of'later'alopenings from which extend intake pipes 7. Said pipes radiate from theouter member 6 and as-a. consequence cover considerable area within thebottom of the holder. In other words, the inlets of the various pipesdraw the gas from remote points and thus, tend toset up a completecircula tion and prevent the'formationof pockets in the gas holderhaving mounted as the gas is i! tie which the gas would otherwise becomestagnant.

In action, gas fiowing through the main 3, 4 under pressure passesupwardly from the nozzle 5 to one side of the center of the holder, and,owing to its velocity, induces an indrawing of the gas through the pipes7 and the rojection of such gas, along with the gas owing from thenozzle 5, upwardly into the tank whereby the body of the gas held withinthe tank below the movable closure or piston 2 will be thoroughlyagitated and intermingled. This is of advantage where the gas is beingdrawn from various furnace units, as for instance, blast furnaces,wherein the output of gas as to quality and physical characteristicswill vary.

Preferably the gas otl'take from the holder will be located remote fromthe nozzle and in Figure 2- there is shown an off-take pipe or main 8which extends inwardly of the body 1 and provided with a plu ality ofopenings as 9 and 10.

In order to permit the piston 2 to come down to the bottom of the holderthe piston will preferably be formed with a hood-piece or cap 11overlying an opening 12 formed in the piston and through which thenozzle (5 will extend when the piston is lowered.

\Vhile it is preferred to employ a nozzle of the injector type, still asimple high speed nozzle may be found all sufficient and in F igure 5, Ihave illustrated such a nozzle, which is designated 13.

\Vhile, as just noted, the construction first described is preferred inthat it draws gas from portions of the lower part of the holder remotefrom the nozzle and recirculates the same, still both forms areeffective.

It is to be noted, moreover, that under both constructions preferablysubstantially the entire volume of the incoming gas from the main passesthrough the high speed nozzle, a point of manifest advantage. This ispar ticularly so over such constructions wherein it is sought to set upagitation within the holder by employing a special pump designed tohandle a limited portion only of the incoming gas and to force the samethrough a nozzle located within the holder.

What is claimed is:

1. In combination with a gas holder; a gas inlet main extending into theholder; an injector nozzle secured to the inner end of the main; aplurality of laterally extending open ended gas circulating pipesconnected to the nozzle within the holder: and a gas discharge on e frrthe holder.

. gas holder, the combination of a s un-like closure mounted therein,having an opening therein; a King said opening; a o the holder at zlestanding in vertical alignment with the hood carried by the closure; aplurality of laterally extending, open ended gas circulating pipesconnected to the nozzle within the holder; and a gas discharge outletfor the holder.

3. In combination with a gas holder; a gas inlet main extending into theholder; an injector nozzle secured to the inner end of the main withinthe holder; at least one open ended gas circulating pipe connected intothe shell of the nozzle and extending laterally therefrom to asubstantially remote point within the holder; and a gas discharge outletfor the holder.

4:. In combination with a gas holder: a gas inlet main extending intothe holder and terminating in an aspirator nozzle located to one side ofthe center of the bottom portion of the holder; and open-ended gascirculating pipes connected into the shell of the aspirator and leadingfrom points within the lower portion of. the holder that aresubstantially remote from said nozzle; whereby substantially the wholeinflow from the main forced into admixture with gas drawn from diverselydisposed regions of the holder.

In testimony whereof I have signed my name to this specification.

PAUL M. KUEHN.

